Project Spark shattered any foresight its developers had

Project Spark, Microsoft Studios game that lets players "build whatever" they want, broke any expectations the team had for how people would use it, studio manager Saxs Persson told Polygon.
(PC, Project Spark, Xbox One)

Some especially funny anti Project Spark comments on here. Good indication that this should be a smash for ms

As much as I adore Minecraft and will continue to do so, this is quite the step up in so many ways. Since the days of the Atari 2600 I've dreamed of such software capable of realising on ideas and it's here at last that we actually will be able realise on them